Improvement in



- H GARTSI E. Improvement In Applylng Wheelsto Railway-Car Axles. No. 130,124. Patented Aug. 6,1872.-

UNITED STATES PATENT OEEIoE.

HENRY GARTSIDE, 0E BALTIMORE, MARYLAND.

IMPROVEMENT IN APPLYING WHEELS TO RAILWAY CAR-AXLES.

Specification forming part of Letters Patent No. 130,124, dated August 6, 1872.

To all whom it may concern Be it known that I, HENRY GARTSIDE, of the city and county of Baltimore, in the State of Maryland, have invented a new and Improved Mode of Applying Wheels to Railroad (Jar-Axles; andI do hereby declare thatthefollowing is a full, clear, and exact description thereof, reference being had to the accompanying drawing making part of this specification, in which- Figure 1 is a section taken diametrically through two truck-wheels applied to an axle, which is broken away in the center. Fig. 2 is an inside view of the loose wheel and a section through the axle, with the inside clos- Y in g-ring removed.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to a new and improved mode of applying car-wheels on their axles, whereby undue strain of the latter is prevented while turning curves in the road. It consists in a hub which is fast on the axle, and which prevents an annular flange bearing and two shoulder bearings, in combination with anti-friction rollers, flange in the eye of hereinafter explained.

The following description of my invention will enable others skilled in the art to understand it.

In the accompanying drawing, A A represent two car-wheels which are applied on an axle, O, and which are adapted either for steam-cars or for street-cars. The wheel A is of the well-known form for street or steam cars, and is applied fast on the axle O in the following manner: B represents a solid hub, which is secured fast on the reduced portion 0 of the axle C in any suitable manner. This hub is constructed with two annular shoulders-to wit, an external shoulder, a, and an internal shoulder, a'between which two shoulders is an annular flange, b. The wheel A is constructed with a circular eye through it, presentingan annular flange, g, externally, and an annular rabbet internally. The space hea closing-ring, and a the wheel, as will be tween the flange g and a removable inside ring, g, receives the annular flange b, and also Y a number of anti-friction rollers, e e, as clearly shown in both figures of the drawing. The inside closing-ring g is received into the rabbet above referred to, and its inner edge affords a bearing against der a. The external annular shoulder a is received within the flange g, as shown in Fig. 1. The loose wheel A constructed and applied on the hub B, will turn freely around this hub without subjecting the axle to any strain whatever when this wheel is sweeping around a curve in the road. On the other hand, when the fast wheel A is sweeping around a curve the flanged hub B and its axle 0 will turn freelyin the eye of the wheel A And when the wheels A A are on a straight road they will both turn with their axle. The hub B afl'ords a bearing for the wheels A of much greater radius than would be practicable to construct an axle; consequently the bearing is nearer the circumference of the wheel, where the strain is the least in turning curves. I ,do not confine myself to having one of the wheels fast on the axle, as both wheels may be loose if desired.

I do not claim a car-wheel constructed in the form shown in the patents of James Patterson and Seymour Rogers, dated, respectively, August 9, 1853, and February 23, 1858; but

What I do claim as my invention, and desire to secure by Letters Patent, is-

The wheel A constructed with an angular, stepped, inner face, the hub B constructed with an annular flange, b, and shoulders a a, the friction-rollers e fitted between the flange and the intermediate shoulder of the stepped inner face of the wheel A, and the plate g, all combined and arranged substantially as described.

HENRY GARTSIDE.

Witnesses G. E. SANGSTON, THos. M. BEADENKOPF.

the internal annular shoul- 1 

